<template>
	<view class="content">
		<view class="navbar" :style="{position:headerPosition,top:headerTop}">
			<view @click="cateer(item.id)" v-for="item in cateList" :key="item.id" class="nav-item" :class="{current: item.id === filterIndex}">
				{{item.name}}
				</view>
			<!-- <view class="nav-item" :class="{current: filterIndex === 1}" @click="tabClick(1)">
				销量优先
			</view>
			<view class="nav-item" :class="{current: filterIndex === 2}" @click="tabClick(2)">
				<text>价格</text>
				<view class="p-box">
					<text :class="{active: priceOrder === 1 && filterIndex === 2}" class="yticon icon-shang"></text>
					<text :class="{active: priceOrder === 2 && filterIndex === 2}" class="yticon icon-shang xia"></text>
				</view>
			</view>
			<text class="cate-item yticon icon-fenlei1" @click="toggleCateMask('show')"></text> -->
		</view>
		<view class="goods-list">
			<view 
				v-for="(item, index) in goodsList" :key="index"
				class="goods-item"
				@click="navToDetailPage(item.id)"
			>
				<view class="image-wrapper">
					<image :src="item.picUrl" mode="aspectFill"></image>
				</view>
				<text class="title clamp">{{item.name}}</text>
				<view class="price-box">
					<text class="price">{{item.counterPrice}}</text>
					<text class="ljgm">立即购买</text>
				</view>
			</view>
		</view>
		<uni-load-more :status="loadingType"></uni-load-more>
		
		<!-- <view class="cate-mask" :class="cateMaskState===0 ? 'none' : cateMaskState===1 ? 'show' : ''" @click="toggleCateMask">
			<view class="cate-content" @click.stop.prevent="stopPrevent" @touchmove.stop.prevent="stopPrevent">
				<scroll-view scroll-y class="cate-list">
					<view v-for="item in cateList" :key="item.id">
						<view class="cate-item b-b two">{{item.name}}</view>
						<view 
							v-for="tItem in item.child" :key="tItem.id" 
							class="cate-item b-b" 
							:class="{active: tItem.id==cateId}"
							@click="changeCate(tItem)">
							{{tItem.name}}
						</view>
					</view>
				</scroll-view>
			</view>
		</view> -->
		
	</view>
</template>

<script>
	import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue';
	import {getOrder,getOrder2} from '@/config/api/category.js';
	import {getCategoryGoodsList} from '@/config/api/goods.js';
	export default {
		components: {
			uniLoadMore	
		},
		data() {
			return {
				cateMaskState: 0, //分类面板展开状态
				headerPosition:"fixed",
				headerTop:"0px",
				loadingType: 'more', //加载更多状态
				filterIndex: 0, 
				cateId: 0, //已选三级分类id
				priceOrder: 0, //1 价格从低到高 2价格从高到低
				cateList: [],
				goodsList: []
			};
		},
		
		onLoad(options){
			// #ifdef H5
			this.headerTop = document.getElementsByTagName('uni-page-head')[0].offsetHeight+'px';
			// #endif
			this.cateId = options.tid;
			this.loadCateList(options.fid,options.sid);
			this.loadData();
		},
		onPageScroll(e){
			//兼容iOS端下拉时顶部漂移
			if(e.scrollTop>=0){
				this.headerPosition = "fixed";
			}else{
				this.headerPosition = "absolute";
			}
		},
		//下拉刷新
		onPullDownRefresh(){
			this.loadData('refresh');
		},
		//加载更多
		onReachBottom(){
			this.loadData();
		},
		methods: {
			//加载分类
			async loadCateList(fid, sid){
				// let list = await this.$api.json('cateList');
				// let cateList = list.filter(item=>item.pid == fid);
				
				// cateList.forEach(item=>{
				// 	let tempList = list.filter(val=>val.pid == item.id);
				// 	item.child = tempList;
				// })
				// this.cateList = cateList;
				try {	// 二级目录
					console.log(fid);
					console.log(sid);
					const res = await getOrder2({id: fid})
					if (res && res.data && typeof res.data === 'object' && 'code' in res.data && res.data.code === 200) {
						this.cateList = res.data.data;
						//循环判断传进来的二级目录id
						for(var i=0;i<this.cateList.length;i++){
							if(this.cateList[i].id==sid){
								this.filterIndex=this.cateList[i].id;
							}else{
								//如果没有的话就用第一个
								this.filterIndex=this.cateList[0].id;
							}
						}
			
					} else {
						console.error('请求失败:', res?.data?.msg || '未知错误');
					}
				} catch (error) {
					console.error('接口异常:', error)
					this.$message.error('数据加载失败')
				}
				
				try {	// 二级目录下商品
					console.log(this.filterIndex);
					const res = await getCategoryGoodsList({id: this.filterIndex})
					if (res && res.data && typeof res.data === 'object' && 'code' in res.data && res.data.code === 200) {
						this.goodsList = res.data.data;
						console.log(this.goodsList);
					} else {
						console.error('请求失败:', res?.data?.msg || '未知错误');
					}
				} catch (error) {
					console.error('接口异常:', error)
					this.$message.error('数据加载失败')
				}
			},
			//加载商品 ，带下拉刷新和上滑加载
			async loadData(type='add', loading) {
				//没有更多直接返回
				// if(type === 'add'){
				// 	if(this.loadingType === 'nomore'){
				// 		return;
				// 	}
				// 	this.loadingType = 'loading';
				// }else{
				// 	this.loadingType = 'more'
				// }
				
				// let goodsList = await this.$api.json('goodsList');
				// if(type === 'refresh'){
				// 	this.goodsList = [];
				// }
				// //筛选，测试数据直接前端筛选了
				// if(this.filterIndex === 1){
				// 	goodsList.sort((a,b)=>b.sales - a.sales)
				// }
				// if(this.filterIndex === 2){
				// 	goodsList.sort((a,b)=>{
				// 		if(this.priceOrder == 1){
				// 			return a.price - b.price;
				// 		}
				// 		return b.price - a.price;
				// 	})
				// }
				
				
				// this.goodsList = this.goodsList.concat(goodsList);
				
				//判断是否还有下一页，有是more  没有是nomore(测试数据判断大于20就没有了)
				// this.loadingType  = this.goodsList.length > 20 ? 'nomore' : 'more';
				// if(type === 'refresh'){
				// 	if(loading == 1){
				// 		uni.hideLoading()
				// 	}else{
				// 		uni.stopPullDownRefresh();
				// 	}
				// }
			},
			//筛选点击
			// tabClick(index){
			// 	if(this.filterIndex === index && index !== 2){
			// 		return;
			// 	}
			// 	this.filterIndex = index;
			// 	if(index === 2){
			// 		this.priceOrder = this.priceOrder === 1 ? 2: 1;
			// 	}else{
			// 		this.priceOrder = 0;
			// 	}
			// 	uni.pageScrollTo({
			// 		duration: 300,
			// 		scrollTop: 0
			// 	})
			// 	this.loadData('refresh', 1);
			// 	uni.showLoading({
			// 		title: '正在加载'
			// 	})
			// }
			// ,
			//显示分类面板
			toggleCateMask(type){
				let timer = type === 'show' ? 10 : 300;
				let	state = type === 'show' ? 1 : 0;
				this.cateMaskState = 2;
				setTimeout(()=>{
					this.cateMaskState = state;
				}, timer)
			},
			//点击二级分类
			async cateer(id){
				this.filterIndex=id;
				try {	// 二级目录下商品
					console.log(this.filterIndex);
					const res = await getCategoryGoodsList({id: this.filterIndex})
					if (res && res.data && typeof res.data === 'object' && 'code' in res.data && res.data.code === 200) {
						this.goodsList = res.data.data;
						console.log(this.goodsList);
					} else {
						console.error('请求失败:', res?.data?.msg || '未知错误');
					}
				} catch (error) {
					console.error('接口异常:', error)
					this.$message.error('数据加载失败')
				}
			},
			//分类点击
			// changeCate(item){
			// 	this.cateId = item.id;
			// 	this.toggleCateMask();
			// 	uni.pageScrollTo({
			// 		duration: 300,
			// 		scrollTop: 0
			// 	})
			// 	this.loadData('refresh', 1);
			// 	uni.showLoading({
			// 		title: '正在加载'
			// 	})
			// },
			//详情
			navToDetailPage(item){
				
				uni.navigateTo({
					url: `/pages/product/product?id=${item}`
				})
			},
			stopPrevent(){}
		},
	}
</script>

<style lang="scss">
	page, .content{
		background: $page-color-base;
	}
	.content{
		padding-top: 96upx;
	}
	.ljgm{
		color: #fff;
		background-color: sandybrown;
		padding: 8px;
		border-radius:3px;
	}
	.navbar{
		overflow-x: auto;
		white-space: nowrap;
		position: fixed;
		left: 0;
		top: var(--window-top);
		display: flex;
		width: 100%;
		height: 80upx;
		background: #fff;
		box-shadow: 0 2upx 10upx rgba(0,0,0,.06);
		z-index: 10;
		.nav-item{
			padding: 10px;
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 30upx;
			color: $font-color-dark;
			position: relative;
			&.current{
				color: $base-color;
				&:after{
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 120upx;
					height: 0;
					border-bottom: 4upx solid $base-color;
				}
			}
		}
		.p-box{
			display: flex;
			flex-direction: column;
			.yticon{
				display: flex;
				align-items: center;
				justify-content: center;
				width: 30upx;
				height: 14upx;
				line-height: 1;
				margin-left: 4upx;
				font-size: 26upx;
				color: #888;
				&.active{
					color: $base-color;
				}
			}
			.xia{
				transform: scaleY(-1);
			}
		}
		.cate-item{
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			width: 80upx;
			position: relative;
			font-size: 44upx;
			&:after{
				content: '';
				position: absolute;
				left: 0;
				top: 50%;
				transform: translateY(-50%);
				border-left: 1px solid #ddd;
				width: 0;
				height: 36upx;
			}
		}
	}

	/* 分类 */
	.cate-mask{
		position: fixed;
		left: 0;
		top: var(--window-top);
		bottom: 0;
		width: 100%;
		background: rgba(0,0,0,0);
		z-index: 95;
		transition: .3s;
		
		.cate-content{
			width: 630upx;
			height: 100%;
			background: #fff;
			float:right;
			transform: translateX(100%);
			transition: .3s;
		}
		&.none{
			display: none;
		}
		&.show{
			background: rgba(0,0,0,.4);
			
			.cate-content{
				transform: translateX(0);
			}
		}
	}
	.cate-list{
		display: flex;
		flex-direction: column;
		height: 100%;
		.cate-item{
			display: flex;
			align-items: center;
			height: 90upx;
			padding-left: 30upx;
 			font-size: 28upx;
			color: #555;
			position: relative;
		}
		.two{
			height: 64upx;
			color: #303133;
			font-size: 30upx;
			background: #f8f8f8;
		}
		.active{
			color: $base-color;
		}
	}

	/* 商品列表 */
	.goods-list{
		display:flex;
		flex-wrap:wrap;
		padding: 0 30upx;
		background: #fff;
		.goods-item{
			display:flex;
			flex-direction: column;
			width: 48%;
			padding-bottom: 40upx;
			&:nth-child(2n+1){
				margin-right: 4%;
			}
		}
		.image-wrapper{
			width: 100%;
			height: 330upx;
			border-radius: 3px;
			overflow: hidden;
			image{
				width: 100%;
				height: 100%;
				opacity: 1;
			}
		}
		.title{
			font-size: $font-lg;
			color: $font-color-dark;
			line-height: 80upx;
		}
		.price-box{
			display: flex;
			align-items: center;
			justify-content: space-between;
			padding-right: 10upx;
			font-size: 24upx;
			color: $font-color-light;
		}
		.price{
			font-size: $font-lg;
			color: $uni-color-primary;
			line-height: 1;
			&:before{
				content: '￥';
				font-size: 26upx;
			}
		}
	}
	

</style>
